package com.atguigu.gulimall.order.web;

import com.atguigu.gulimall.order.service.OrderService;
import com.atguigu.gulimall.order.vo.OrderConfirmVo;
import com.atguigu.gulimall.order.vo.OrderSubmitVo;
import com.atguigu.gulimall.order.vo.SubmitOrderResponseVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.concurrent.ExecutionException;

@Controller
public class OrderWebController {

    @Autowired
    private OrderService orderService;

    /**
     * 去结算
     *
     * 1 查询用户收货地址
     * 2 查询购物车中选中的商品
     * 3 查询商品库存
     * 4 设置防重令牌，客户端、redis都设置一份。防止重复下单。
     */
    @GetMapping("/toTrade")
    public String toTrade(Model model) throws ExecutionException, InterruptedException {
        OrderConfirmVo orderConfirmVo = orderService.confirmOrder();
        model.addAttribute("orderConfirmData", orderConfirmVo);

        return "confirm";
    }

    /**
     * 提交订单
     *
     * 1 验证防重令牌
     * 2 获取订单商品
     * 3 验证价格
     * 4 锁库存
     * 5 保存订单信息
     *
     *
     */
    @PostMapping("/submitOrder")
    public String submitOrder(OrderSubmitVo vo, Model model, RedirectAttributes redirectAttributes) {
        // 创建订单、验证令牌、验证价格、锁库存
        SubmitOrderResponseVo responseVo = orderService.submitOrder(vo);

        if (responseVo.getCode() == 0) {
            // 下单成功，去支付选择页
            model.addAttribute("submitOrderResp", responseVo);
            return "pay";
        } else {
            // 根据状态码验证对应的状态
            String msg = "下单失败";
            switch (responseVo.getCode()) {
                case 1:
                    msg += "订单信息过期，请刷新后再次提交";
                    break;
                case 2:
                    msg += "订单商品价格发生变化，请确认后再次提交";
                    break;
                case 3:
                    msg += "库存锁定失败，商品库存不足";
                    break;
            }
            redirectAttributes.addFlashAttribute("msg", msg);
            // 下单失败，去订单确认页
            return "redirect:http://order.gulimall.com/toTrade";
        }
    }
}